Bottom-tilting-door extractor



l. D. I'HOMAS BOI-TOM TILTING DOOR vEXTRACTOR Filed April 5, 1925 2 Sheets-Sheet Oct.` 30, 1928. 1,689,216

1 D. THOMAS BOTTOM TILTING DOOR EXTRACTOR Filed April 5, 1925 2 Sheets-Sheet 2,

' literally'out of the door frames.

Patented Oei. 3o, 192s.

y l nutren stares I leent 4eervee-rY @if-Fica! Even 4nTietn/rA-s, orientierten, onto, V.assren'fm 'ro 'me rev-Emmen summa MORGAN COMPANY, uenferi-Evenmin, onto, a eonromirren Tor omo.

BomroM-TrLTme-Doon EXTRACTQR.

Application mednprn 3, 1925. serial Ne. m4a1.

rvIltis''inventionrelates to Ydoor extractors7 and particularly. to 'machines y adaptedV to travel along .thefront of a battery of coke ovens and provi-'ded with means for removing and replacing-the doors at the endsof the oven chambers. These doors are veryheavy and a r'ehelc'l Qtightly cinthe door 'frames by the clay used to seal the space between the edges of the doors and the sides of .the door frames. Llnr-emoving thedoers it is necessaryto free tbe doors 'from their 'framesiand to move them "The lpresent yinvention has for an object te vprovide mechanism capable Yof engaging and removing t-liedoers quickly and with minimum expenditureof power. Y

'further Objectis to provide meansfor strz ing door from yits casingby a `tiltilflg Stom atie-ally transferred to the extractor without lifting the door in such .a manner that thefettractor may be baclced away from the i l Y through the 'upper ends ofthe ileymbersfthe door frame 'te carry the door yto a position clear of its frame.

With the :above and other objectsV in view, e invention may be .sai-d to comprise a door acting mechanism ,as disclosedin the accmnnanying 4dr'wings and 'hereinafter deed and par icularlyset forth in the appended claims, together with such variations and modiflcations thereof as willbe apparentl te one sliilledin the artY to which theinvention u appertains Reference should'be had to the accompanydrawings forming .a part of this specifica-r tion in whieh the Fig. 1 is a side elevation of tliedeor .engaging portion ofthe door extractor; 2 is a front yelevation of thedoor en- I thereof with outwardly .projecting brackets 3,

adapted to beengagcd by the upper and lower door engaging l'hooks of the extractor. The doer extractor mechanism is preferably mounted en a-car which travels on a track eX- tending along the frontof the ovens. Since rovement such that the weight of the door isl transversely ofthe carriage toward'and from the door openings by me'ansof a pini-on 60p- Verated vby suitable driving lm'ec'hanism `on the carriage.v Upon the forward endo'f the `ram 5 therey 'isl rigidlyv secured a! Ivertically disposedcasing 7 which is open at the Ifront to accommodate `the projecting door V'engaging members and has an enlarged portion 8 attire upper end4 mechanism. n v c Ad] acent the upper end of the casing lthere isrmountedapair of la-shaped door engaging members 9 havingforwardly projectingdoor engaging arms 10. 'The members v@are suspended from a horizontal pivot'pin 11 carried by thevsi de walls of the teasing 7 and 'passing members 9 being positioned adjacent the opposite side walls of the casing'?, The'm'em bei'sQ are rigidly connected and provided 'with a buffer springjlQ interposed between the members 9 and the rear vwall of the casing 7, the spi-ing 12 permittingth'e members 9 to swing rearwardly when the door engaging have n'o't'beenk thereof vforv housing the `operating 10 are engaged withk the' door. The up-A per door engaging hook 13 ispivoted between the arms 1() upona horizontal pin 14 .confA necting the L-shapedmembersQ adjacent the bend thereofiand the hoek 13-is provided with an upwardly extended Vintegral arm 15 ,v by means of whichitmay be swung about the pivot 11i into engagement r with the upper bracket 3 on a door. l c v W. s A lever 16 is mountedwithinthe casing`7 upon horizontal pivot pin 17 towardthe lower end of the casing and theliever 16' projects below pivot pin 17 n and has a .lower 'Qrked endv 18 extending. forwardly 'teward .the door.

The torkedend 18`of the lever 16 extends forn wardly'from the casing 7 andlsubstantially thelsame distance as the arms g1() of 'theupper y yieldably mounted jmembers 9 and the outward movement ofi thelower end porjtgn @cf thevlever 16 lis cushioned by afbulfer spring 1 9 interposed between the lever lfand th rear wall'of the casing'7, the out'wva-rd vm'ovementof .loo

the lower end of the lever 16 being limited by an abutment 20 on the rear wall of the -casing s. 7. A lower door engaging hook 21 lies beend is provided with a longitudinal slot 321 tween the spaced arms 18 at thelower end of the lever 16, being pivoted on aV horizontal pivot pin 22 extending between the arms 18. The lower door engaging hook 21 is of substantially the same length as the upper hook 13 and is connected thereto by means of a' link 23 which causes the hook 21 to be moved simultaneouslyfwith the hook 13 into door engaging position, the links 23 being preferably adjusted to a length such that the hook 13 engages its bracket first and exerts the upw rd thrust on the door. l

For operating the door engaging hooks 'to strip the-door from its frame suitable mechanism is provided at the upper end of the casing 7. An: electric motor 24 is mounted on the top of the casing andthe shaft of the Vmotor is provided with a pinion 25 which meshes with a large gear 26 fixed to a screw 27 which extendshorizontally through the enlarged portionS Vof the casing, the screw 27 being disposed substantially at right angles to the plane of a door.; Mounted uponthe Screw 27 there is a nut 28 whichis held against rotation and caused to travel longitudinally of the screw 27 when the screw is rotated by Vthe motor. yPivotally suspended from the nut 28 there iS a lever29 which is connected at its upper end to the nut 28. Between the ends thereof, the lever 29 has connected theretoa link 3() which is connected to the lever bymeans of pivot pin 31 and at its opposite Y which receives a pin 33xed to the upper endof the arm 15 of the upper door engaging hook, The lower end of thel lever 29 is-connected by a link 34 with the upper end of the lever 16, the link 34being pivoted at one end at 35 to the lever `29 and at itsopposite end at 36 tothe upper end of the lever 16;v YVhenV the nut 28 is at the forward end of the screw 27, the lever 29 will be held in a position such that the door engaging hooks13 and 21 are in' their lowe'rmost positions indicated in dotted lines in Fig.v1.'f vIf the motor 24 is operated in adirection to cause the nut 28 to travel rearwardly on the 'screw 27 the link 3 0'will be drawn rearwardly causing thev hooks 13 fand 21 to move upwardly, the lever 29 first moving about the pivot 35 as a ful` crum since the forward thrust on the upper end 'of the ar1n16isinsuicient to move the Y :i arnilin opposition Vto the buffer spring 19.

, "arms lnand 18 serving to properly positionhooks 13 and 21 with respect to brackets on thegdoor so that when the hooks13 and 21 l are swnngupwardly by the v actuating mechasfabove described. they will engage .movable bodily .on the support toward and with the brackets 3. As soon as the hooks 13 and 21 have been moved by the lever 29 into engagement with the brackets 3 further movement of the lever 29 will cause the hook n 13 to exert an upward thrust upon the door, thus imposing a greater loadupon the pivot 31 'of the-lever causing the lever to exert correspondingly greater thrust through the'link 3i upon the upper end'of the lever 16, causing the lever to exert an outward pullupon the lower door engaging hook 21. 4The leverage is such that as soon as the hook 13 engages the brackets 3, the upward'movement of the hook is stopped and the pivot 31 of the lever 29 becomes the fulcrum, the lower end of the lever swinging forwardly toward the ,door and moving the lever 16 about its pivot so that the lower door engaging hook 21 is l pulled bodily away from the door frame carrying the lower end of the door with it. This movement results in the tilting of the door about'an axis toward the upper end thereof which results in the freeing of the door from its casing, As soon asl the lower end'of the lever 16 strikes the, abutment 20, the lever 16 can have no further movement and the actuating lever 29 fulcrums about its lower pivot 35. The lever 29 now moves the upper end of the arm 15 of the hook 13 outwardly and the weight of the door reacts through the hook 13 and pivot upon the pivotally suspended door engaging members 9 carrying the hook, causing the vsam'eto swing outwardly about the pivots until the spring 12 is compressedV sufficiently to resist the thrust thereon, after which anyfurther movement of the lever 29 causes the hooks 13 to swing upwardly about their pivots lifting the door.v 1

The stripping of the` door from its casing by pulling the bottom thereof outwardly results in automatically transferringthe weight of the door to the door engaging hooks so that theram 5 may be backed away to carry the p door from its casing without further actuation of the door engaging hooks. V

Havin described my invention, I claim 1.Y A door extracting mechanism comprising a support adapted to be positioned in f front of a door to be extracted and to be moved toward Yand from the door opening, upper and lowerdoor engaging hooks car-,-

ried by the support,` the lower hook being from the door opening, and meansformoving the hooks into door engaging'position'and y for shifting thelower of the hooks outwardly in advance of the upperhook totilt the doorL 2. A door extracting mechanism comprising a support adaptedto be positioned'in front ,of a door to beextracted, upper-fand lower door engaging hooks carriedfby the sniliport-,j the lower hook being movablebodily onthe support toward andfrom the door opening', an actuating device, and means con-A necting said actuating ,device to Vsaid hooks-x for simultaneously moving saidv hooks into door engaging position, and 'inea-ns connecting -said'actuati'ng device to the ylower ofsaid hooks forshifting the same outwardly to tilt the door. y f

3. A ydoor extracting mechanism compris- -ino a suiiort adaoted to lbe oositlioned in actuating means for said hooks vfor :moving themv to door engaging position, Vsaid actuatingmeans connection with the lower hook tor shifting the same outwardly toftilt the'door.. i l

4. A Adoor extracting mechanism comprising a support adapted Vto be positioned yin iront- 'ot `a "door to be extracted, Aupper and 'lower members lcarried* by said 'support and mounted for independent movements on the supporttowa-rd Vand :from the door frames, door Iengaging hooks `pivotally :mounted on said members, and ymeans for :moving the hooks simultaneously.about their pivots into door engaging position and for lshitting the lower vhook carrying member outwardly to tilt the door.

5. A door extracting mechanismcomprising ya support adapted to vbe positioned in iront of a door to be extracted, upper andV lower door engaging hooks movably mounted on :the support, the lower ot zthe hooks being engageable with the door toward the lower end thereof and `mounted for movement into door engaging position land tor bodily movef outwardly to -tiflt the door.

nient outwardly from the door opening, zand means for simultaneously :actuating said hooks to engage Ytlie saine v'with the ldoor, sai-d actuating means `having a connection with thelower-of the-hooks lfor shifting fthe same 6. A door extracting mechanism comprising support .adapted to 'be positioned in Jfront of a door, an upper door engaginghool; carried by said support and mounted for Vmovement about er-'horizontal axis, a lever' pivoted to the support below the upper hook,

a lower door lengaging hook connected to said movement about a. horizontal axis, a lever pivoted to the support below the upper hook,

a lower door engaging hook connected to said lever by a horizontal pivot, a link connecting Y the two hooks, an actuating lever, and links connecting said actuating levertothe Supper door engaging :lioolr and fto the vfirstmentionsd lever.,. Y Y

8.; A door extracting mechanismcompnising a support adapted to Vbe Vpositioned in front of a door, an upper door engaging hook carried by said. support vand Vmounted ktor movement 'about a horizontal axis, va lever pivoted intermediate its ends vto 'the support belowthe upper hook, a `lower door engaging hook pivoted to the lever below theipivot thereof, a link connecting the upper and lower hooks, and Aactuating means connected to the Aupper hook 'and to the upperend 'off said lever.

9. A door extracting mechanism/comprising lasupport `adapted to bepositioned in front of.V a door,an vupper door engagingfhoolr v carried by said support and mounted Yiter movement about a horizontal 'ax-is, a leve'r pivoted intermediate its ends'to ythe :support below the upperhool', a lower door engaging hook -pivoted to the lever below the pivot thereof, a link connecting the upper fand lower hooks, an actuatin gllever, :a link .connecting said lever Ito the upper lhook, anda link connecting .said lever to vthe-Supper end of the first mentioned lever.

l0.' ri door extracting :mechanismcompris- 'trontof a door,lan upper door engaging-Shook f cai' ied by said support and. mounted for movement about a horizontal axis, :a lever pivoted intermediate its :ends to the support below the-upper hook, a lowerdoor vengaginghool; pivoted to the lever below'tliepifvot thereof, a 'linlr :connecting 'the upper Sand lower hoolrs, a `screw 'on vsaid support, a yiii'ut on the screw, an actuating lever pivotally secured to 'th'e Enut 'alinlt connecting said-,actuf1 ating lever 'to the upperihoo'lr, a lin'lrconnecting said actuating lever 'tothe upper rend of the first mentioned lever, and means for fro- `tatiiig the' screw'to shiict said nut.

" 11; A 'door extracting mechanism compriscarried by said lsupport .andi-mounted forv vmovement about a horizontal axis, a lever 11,0 Y' 'pinga support Yadapted to be kpositioned in 'front-'of a-door, an upper door engagingfhook lowerliools, an 'actuating lever, a link conf netted to `said actuating lever intermediate the ends thereof and tothe upper hook, a link connecting the lower end of the actuating support by a horizontal pivot,said member having a forwardly projecting door engaging` rt below said member, a spring interposed etween the lever and support below the pivot of the lever, a lower door engaging hook connected to the lever below the pivot thereof by'a horizontal pivot, alink connecting the -upper and lower hooks, and means connected to one of the hooksand to said lever for -actuating the same to swing the hooks into door engaging position and to move the lower oi' the hooks outwardly to tilt the door;V

13. A door extractinglmechanism comprising asupport adapted `to be positioned yin front of a door, a member connected to said sup ort by a horizontal pivot, said member having afforwardly projecting door engaging part below the pivot, a spring interposed between said member and support, a door engaging hook supported on said member below the pivot thereof, by a horizontalpivot, a lever pivoted intermediate its ends to the supportfbelow said member, a spring interposed between the lever and support below the pivot of the lever, a lower doorengaging hook connected to the lever below the pivot thereof by a horizontal pivot,-a link connecting the upper and lower hooks, an actuating lever, av link'eonnecting said actuating lever to the `upper hook, and a link connecting said actuating lever to the irst mentioned lever.

14. Adoor extracting mechanism compris# ing ak support adapted tovbe positionedv in connecting the lever end of the aietiiatingr lever to the first mentioned lever.

l5a A door extracting mechanism compris ing a support adapted to 'ce positioned in front oit a door to be extracted, a lever con-v nected to said support by a horizontal pivot,

a vertically swinging door engaging hook' carriedby the lever. and an actuating lever having separate connections to the hook and to the lirst mentioned lever.

16. A door extracting mechanism comprising a support adapted to be positioned ink iront of Va door to be extracted, a lever conneet-ed intermediate its ends to the support by a horizontal pivot, a vertically swinging door engaging hook carried bythe lever ad' jacent one end thereof,.an actuating lever and thrust transmitting members connected by pivots at spaced points to said actuatinglever,`

said. iiieinb-ers being.operativelyl connected to .sai d hook'and 'lirst mentioned lever and saidv lever being adapted to tulcrum about the pivot of the member offering the greatest .Y

resistance to movement.

V17.' prising a support adapted to be positioned A door extracting mechanism coinin front of a door to beextracted, a door engagino member mounted upon the support for movement in an upward direction to litt Vthe door and formovement in an outward direction to tilt the saine, a lever connected to` f said engaging member for exerting an out# ward thrust thereon, a lever connected to saidV engaging member for Vactuating the same in a direction to exert an upward thrust upon the Y door, said last mentioned lever being connected withtlie first mentioned lever to actuate the same.

In testimony whereof, I hereunto atlix -iny signature.

` ivon ni THOMAS 

